1 / 14

Understanding Motion and Energy Concepts

Learn about motion, speed, velocity, acceleration, and energy concepts in this educational chapter. Explore key terms and calculations for each section.

lmarcantonio
Download Presentation

Understanding Motion and Energy Concepts

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Unit 3: Motion, Forces, & EnergyChapter 9: Motion & Energy Big Idea: You can describe the motion of an object by its position, speed, direction, & acceleration

  2. 4 Sections • Describing Motion • Speed & Velocity • Acceleration • Energy Mrs. Lee - Ch 9

  3. Sec 1: Describing Motion KEY CONCEPTS • An object is in motion if it changes position relative to a reference point • Distance is the total length of the actual path between 2 points. Displacement is the length & direction of a straight line between starting & ending points Mrs. Lee - Ch 9

  4. Motion Reference point Distance Displacement Vector Sec 1: Key Terms Mrs. Lee - Ch 9

  5. Sec 2: Speed & Velocity KEY CONCEPTS • To calculate the speed of the object, divide the distance the object travels by the time it takes to travel that distance • Speed = Distance Time • Changes in velocity may be due to changes in speed, changes in direction, or both Mrs. Lee - Ch 9

  6. Sec 2: Speed & Velocity (cont’d) • The slope of a distance vs. time graph represents speed -- the rate that distance changes in relation to time • Slope = Rise Run Mrs. Lee - Ch 9

  7. Speed Average speed Instantaneous speed Velocity Slope Sec 2: Key Terms Mrs. Lee - Ch 9

  8. Sec 3: Acceleration KEY CONCEPTS • In science, acceleration refers to: 1) increasing speed 2) decreasing speed or 3) changing direction • To determine the acceleration of an object, you must calculate its change in velocity per unit of time Mrs. Lee - Ch 9

  9. Sec 3: Acceleration (cont’d) • Acceleration = Final velocity – Initial Velocity Time • You can use both a speed vs. time graph & a distance vs. time graph to analyze the motion of an accelerating object Mrs. Lee - Ch 9

  10. Acceleration Sec 3: Key Terms Mrs. Lee - Ch 9

  11. Sec 4: Energy KEY CONCEPTS • The kinetic energy of an object depends on both its mass & its speed • Kinetic Energy = 1 x Mass x Speed2 2 • An object’s gravitational potential energy depends on its weight & on its height relative to a reference point Mrs. Lee - Ch 9

  12. Sec 4: Energy (cont’d) • Gravitational potential energy = Weight x Height • Mechanical energy = Potential energy + Kinetic energy Mrs. Lee - Ch 9

  13. Sec 4: Energy (cont’d) • Any object that rises or falls experiences a change in its kinetic & gravitational potential energy • According to the law of conservation of energy, energy cannot be created or destroyed Mrs. Lee - Ch 9

  14. Work Energy Kinetic energy Potential energy Gravitational potential energy Elastic potential energy Mechanical energy Law of conservation of energy Sec 4: Key Terms Mrs. Lee - Ch 9

More Related